Re: Including a low-latency kernel images in Debian for use with CDD DeMuDi.
On Sat, Feb 11, 2006 at 12:06:17PM +0900, Junichi Uekawa wrote:
> Hi,
>
Who made the comments you are replying to and where were those posts made ?
> > > I'm ambivalent on this point.
> > >
> > > However, to build the CDD, it would be nice if the CDD can be built
> > > completely from sources available within Debian.
> >
> > As a humble user, I only vaguely understand all this business with realtime
> > capabilities and the security issues involved. Apart from the dependencies,
> > what would be the reasons for not including all DeMuDi packages including the
> > kernel in Debian? Surely it would be appropriate for a Custom Debian
> > Distribution to be installable from pure Debian sources.
>
> Including low-latency kernel will require quite a bit of overhead
> including making sure it builds and works on most architectures. That
> will mean I (or somebody else) will have to hack kernel on ppc and
> amd64 architectures which are less tested for -RT trees.
Well, i think the -RT tree on powerpc is used in the embedded world, but i
guess the problem may not be in the core kernel, but in a whole bunch of
drivers never built on those embedded targets.
> I think it's something to discuss with debian-kernel guys.
>
> What would be the implication of including kernel images of
> low-latency kernel variation into Debian?
I guess we could make it a subarch for now, so duplicate all flavours (or
those that make sense) with the -RT stuff enabled, as has already been done
for vserver. I now have a fast build machine (still in its box though), so i
don't worry about the duplication of kernels this means.
But i disagree on enabling those things on the main kernels yet, as they are
cause of random breakage still, but i would defer to others with more
knowledge.
Friendly,
Sven Luther
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